so I finally went to start up my engine today. it would crank over, fire and run for a sec then stall out. I figured it was normal it just had to get on the right cycle. so tried it a few more times and it fired right up but running a little rough. checked for codes and im getting a p0335 and p0336 which is the crank sensor. so I figured maybe I had bought a bad sensor. went out and got a new one and still the same thing. the wiring all looks good and im no getting any miss fire codes. so im wondering if the guy who tuned it messed that up some how ? or if I need to get the scan tool from my shop and try re programming the sensor. but im leaning towards it had been tuned wrong.


any ideas?

 

or im thinking the computer could be wrong. when I bought the harness it said that the computer I have now will work for it. numbers matched and everything. its the blue and red connector one.
but when I received my harness, the manual has a different computer number listed in there to use. But I would think if the computer was the wrong one it wouldn't even let the motor start up and have everything else working fine BUT the crank sensor.

 

I had the same thing happen to me the first time I fired my car up after the swap. It would run for a sec then die. Ended up being a vacuum leak. If you dont have the stock pcv system on your engine check and make sure the port on the passenger side front of the intake is covered or any of the others. Only other thing I can think of if it isnt tune related would be the fuel system might have air in it. Hope that helps.

Jay

 

I doubt it's a vacuum leak. Everything is hooked up. And when it was running it doesnt have that sucking sound anywhere. Also with my scan tool and on my tach I'm not getting any rpm readings which is leading me to think something is up with the program on the ecm. It'll run for like 30 sec and then stall out from the crank not reading